Raptors general manager Bryan Colangelo was all smiles as his players and coaches gathered at the Air Canada Centre for the team’s annual media day.

Of course, they haven’t started playing yet.

And, Colangelo wasn’t listening to what his veteran point guard, Jarrett Jack, was saying.

Jack, in a measured, diplomatic way, chided his boss for throwing the team’s former star player, Chris Bosh, under the bus last July.

At the time, when it became apparent that Bosh would not be resigning with the Raptors, Colangelo expressed the frustrations he felt during the 2009-10 season when Bosh was medically cleared to play following an injury, but chose not to. The inference was that Bosh was already looking towards the next season.

“Whether he was mentally checked out or just wasn’t quite into it down the stretch (last season), he wasn’t the same guy,” Colangelo told The Fan. “I think everybody saw that, but no one wanted to acknowledge it.”

Jack, a former teammate of Bosh’s at Georgia Tech, still refuses to accept any suggestion that Bosh threw in the towel last season or was saving himself for his new team after he became a free agent.

“Everybody’s entitled to their own opinion. (But) that’s an unfortunate thing to ever have to say about anybody that you worked with,” said Jack, adding that if anyone questioned Bosh’s heart and commitment they should have said something at the time and not in July.

For his part, Jack believes that Bosh never wavered in his commitment to the Raptors, even after he badly cut his hand in a fluke accident.

“Nobody knew that. He could have easily sat out that game. People have sat out for less around here,” Jack said. “I’ve seen him play through a lot of things, injuries, personal problems that people didn’t know about. It’s unfortunate that people would even suggest that he’d do that.”

Jack also expressed surprise that there is any animosity in Toronto towards Bosh as a result of his decision to join Dwyane Wade and LeBron James in Miami with Heat.

“I don’t understand them having disdain toward him, because if he had signed back with Toronto, they’d have loved him. So just because he went somewhere else, because he had a better chance of winning, what’s wrong with that?” Jack asked. “If you’re a regular guy and had a better opportunity to get another job, you’d take the job, right? That’s how people need to look at it. Look at it like everyday life. I’m sure if he could have stayed here and won multiple championships, if that was a possibility for him, he would have done it.”

What Jack did not address was the way Bosh handled his free agency, the way he rubbed the Raptors’ fans nose in it at times. Even Bosh admitted at one point during the free agency process that, yes, he had played with the Raptors fans’ emotions via his beloved Twitter account.

Bosh has also repeatedly taken subtle shots at Toronto, a city he once confessed to love. And he hasn’t let up. Just the other day, the Dallas native let it be known that one of the advantages of playing in Miami is the chance to increase his profile and boost his marketability.

“I’ve always been marketable,” Bosh said. “I just needed to be in a good market. I mean, not a good market rather, but a market with notoriety.”